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Diamond Crystallization in the System B4C–C

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Inorganic Materials Aims and scope

Abstract

Superhard polycrystalline diamond material consisting of crystallites less than 20 μm in size and containing less than 5 wt % B4C is synthesized in the graphite–B4C system at 2600–2800 K and 8–9 GPa. In the Raman spectrum of this material, the main band (1332 cm–1) is shifted to lower frequencies by 40 cm–1, typical of heavily boron-doped diamond films. Based on experimental data, a mechanism is proposed for the transformation of graphite into polycrystalline diamond at temperatures between the melting points of the B4C–diamond and B4C–graphite eutectics.

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Authors and Affiliations

  1. Vereshchagin Institute of High-Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow oblast, 142190, Russia

    E. A. Ekimov, R. A. Sadykov, E. V. Tat'yanin, V. N. Slesarev & N. N. Kuzin

  2. Lebedev Institute of Physics, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991, Russia

    N. N. Mel'nik

  3. High-Pressure Research Center, Polish Academy of Sciences, Sokolowska 29, 01 142, Warsaw, Poland

    A. Presz

Authors
  1. E. A. Ekimov
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  2. R. A. Sadykov
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  3. N. N. Mel'nik
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  4. A. Presz
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  5. E. V. Tat'yanin
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  6. V. N. Slesarev
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  7. N. N. Kuzin
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Ekimov, E.A., Sadykov, R.A., Mel'nik, N.N. et al. Diamond Crystallization in the System B4C–C. Inorganic Materials 40, 932–936 (2004). https://doi.org/10.1023/B:INMA.0000041324.72935.3b

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  • DOI: https://doi.org/10.1023/B:INMA.0000041324.72935.3b

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